ASoC: pcm512x: Fix not setting word length if DAIFMT_CBS_CFS

In `pcm512x_hw_params()`, the following switch-case:

~~~~
	switch (pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBS_CFS:
~~~~

returns 0, which was preventing word length from being written into codecs
register.

Fixed by writing it into register before checking
`SND_SOC_DAIFMT_MASTER_MASK`.
Tested with Raspberry Pi + sound card `hifiberry_dacplus` in CBS_CFS format

Signed-off-by: Kirill Marinushkin <kmarinushkin@birdec.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Matthias Reichl <hias@horus.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: alsa-devel@alsa-project.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20201115122306.18164-2-kmarinushkin@birdec.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/pcm512x.c b/sound/soc/codecs/pcm512x.c
index 8153d3d..db3dc6a 100644 (file)
--- a/sound/soc/codecs/pcm512x.c
+++ b/sound/soc/codecs/pcm512x.c
@@ -1195,6 +1195,13 @@ static int pcm512x_hw_params(struct snd_pcm_substream *substream,
                return -EINVAL;
        }
 
+       ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
+                                PCM512x_ALEN, alen);
+       if (ret != 0) {
+               dev_err(component->dev, "Failed to set frame size: %d\n", ret);
+               return ret;
+       }
+
        switch (pcm512x->fmt & SND_SOC_DAIFMT_MASTER_MASK) {
        case SND_SOC_DAIFMT_CBS_CFS:
                ret = regmap_update_bits(pcm512x->regmap,
@@ -1229,13 +1236,6 @@ static int pcm512x_hw_params(struct snd_pcm_substream *substream,
                return -EINVAL;
        }
 
-       ret = regmap_update_bits(pcm512x->regmap, PCM512x_I2S_1,
-                                PCM512x_ALEN, alen);
-       if (ret != 0) {
-               dev_err(component->dev, "Failed to set frame size: %d\n", ret);
-               return ret;
-       }
-
        if (pcm512x->pll_out) {
                ret = regmap_write(pcm512x->regmap, PCM512x_FLEX_A, 0x11);
                if (ret != 0) {